<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../react资料_stu//依赖包/react.development.js"></script>
    <script src="../react资料_stu//依赖包/react-dom.development.js"></script>
    <script src="../react资料_stu//依赖包/babel.min.js"></script>
</head>

<body>
    <div id="app"></div>
    <script type="text/babel">
        /* 
      组件实例有一个state属性,当state属性发生改变的时候,组件会重新执行render得到一个新的虚拟DOM,然后开始diffing算法,并重新渲染
    
    */
   class Content extends React.Component{
    //state:定义当前组件内部的状态,状态是当前组件私有的
    state={
        content:'真NB',
        count:0,
        isHot:true
    }

    render(){
        console.log('我render了',this);
        const {content,isHot,count}=this.state;
        return(
           <div>
            <h1>title</h1>
            <p>{content}</p>
            <p>{count}</p>
            <p>{isHot?'热啊':'冷啊'}</p>
            </div>
        )
    }
   }
   ReactDOM.createRoot(document.getElementById('app')).render(<Content/>)
    </script>
</body>

</html>